CN216641203U - Precast beam type folded plate stair - Google Patents
Precast beam type folded plate stair Download PDFInfo
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- CN216641203U CN216641203U CN202120087806.4U CN202120087806U CN216641203U CN 216641203 U CN216641203 U CN 216641203U CN 202120087806 U CN202120087806 U CN 202120087806U CN 216641203 U CN216641203 U CN 216641203U
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Abstract
The utility model discloses a prefabricated beam type folded plate stair which comprises side beams and a folded plate, wherein the two side beams are erected in parallel and oppositely, the folded plate is fixedly connected between the two side beams and is in a stepped plate shape, and the upper surface and the lower surface of the folded plate are lifted step by step in a stepped shape. The utility model can reduce the weight of the prefabricated staircase, reduce the use amount of building materials, reduce the transportation and hoisting cost, simultaneously ensure that the steps of the staircase are not easy to crack, improve the rigidity of the reinforcing mesh inside and are not easy to deform.
Description
Technical Field
The utility model relates to the field of buildings, in particular to a prefabricated beam type folded plate stair.
Background
The existing prefabricated stairway is divided into a plate-type stairway and a beam-type stairway, as shown in figure 1, two sides of the plate-type stairway are provided with no beam, the whole stairway is integrated, and the bottom surface 3 of the stairway is inclined and ascends in a flat plate shape; as shown in fig. 2 and 3, the beam type staircase has side beams 1 on both sides, a stair board is erected between the two side beams 1, the bottom surface 3 of the stair board still rises in a flat plate shape in an inclined manner, and the steel bars 4 in the stair board are arranged in parallel with the bottom surface 3, so that the steps of the stair board are of a plain concrete structure and are easy to dry and crack; and the steel bar net sheets are arranged on the steps of part of the beam type stairs, but the steel bar net sheets are only arranged in the steps and are in a plane net shape, are easy to deform when being spliced and hoisted in place with the beam steel bar cage, and are difficult to place. No matter be board-like stair and beam type stair, the bottom surface 3 of current prefabricated stair all is flat-plate-shaped inclined plane, causes the weight of stair component overweight like this, takes 2.9 meters layer height as an example, and stair component weight is about 4.8 tons, and the reinforcing bar quantity is about 208kg, and after the weight of hoist during in addition hoist and mount, whole weight has exceeded 5 tons, and ordinary construction tower crane can't satisfy the hoist and heavy requirement, need upgrade the tower crane, can cause construction cost's increase like this.
Therefore, how to create a new lightweight precast beam type folded plate stair belongs to one of the currently important research and development issues.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a prefabricated beam type folded plate stair, which reduces the weight and the hoisting difficulty and cost, thereby overcoming the defects of the existing prefabricated stair.
In order to solve the technical problem, the utility model provides a prefabricated beam type folded plate stair which comprises side beams and a folded plate, wherein the two side beams are erected in parallel and oppositely, the folded plate is fixedly connected between the two side beams and is in a stepped plate shape, and the upper surface and the lower surface of the folded plate are lifted step by step in a stepped shape.
As an improvement of the utility model, the folded plate is of a reinforced concrete structure, and a reinforced net piece is arranged in the folded plate.
Furthermore, the steel mesh sheet is bent into a ladder-shaped ascending shape which is the same as the folded plate, and the steel mesh sheet is distributed on the horizontal part and the vertical part of the folded plate.
After adopting such design, the utility model has at least the following advantages:
1. the bottom surfaces of the folded plates are optimized to be in a step shape from an inclined flat plate shape, the using amount of concrete is reduced by 33%, the using amount of reinforcing steel bars is reduced by 43%, the using amount of building materials is saved, the weight of the member is light, the transportation and hoisting cost is reduced, and the hoisting requirement can be met by a common construction tower crane.
2. The reinforcing mesh is arranged on the tread, and the stressed reinforcing steel bars and the anti-crack reinforcing steel bars are uniformly shared to play the roles of cracking resistance and stress resistance;
3. the reinforcing mesh is bent to be in a ladder shape identical to the folded plate, and is distributed in the kicking surface and the stepping surface, so that the integral rigidity is improved, and the reinforcing mesh is not easy to deform.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
FIG. 1 is a cross-sectional view of a prior art prefabricated slat type staircase;
FIG. 2 is a cross-sectional view of a conventional precast beam type staircase;
fig. 3 is a reinforcing bar arrangement diagram of a conventional precast beam type staircase;
FIG. 4 is a cross-sectional view of a precast beam folded-plate stair provided by the present invention;
fig. 5 is a reinforcing steel bar layout diagram of the precast beam type folded plate stair provided by the utility model.
Description of reference numerals: 1-a side beam; 2-folding the plate; 3-bottom surface; 4-reinforcing steel bars; and 5-reinforcing mesh.
Detailed Description
Referring to fig. 4 and 5, the utility model provides a prefabricated beam type folded plate stair, which comprises side beams 1 and folded plates 2, wherein the two side beams 1 are erected in parallel and oppositely, the folded plates 2 are fixedly connected between the two side beams 1, the folded plates 2 are in a ladder plate shape, and the top surfaces and the bottom surfaces 3 of the folded plates 2 are lifted step by step in a ladder shape, so that the concrete consumption can be reduced and the weight can be reduced compared with the traditional stair plates with the inclined bottom surfaces 3.
The folded plate 2 is of a reinforced concrete structure, the steel mesh 5 is arranged in the folded plate 2, the steel mesh 5 is bent into a ladder ascending shape identical to that of the folded plate 2, and the steel mesh 5 is distributed over the horizontal part and the vertical part of the folded plate 2, so that stressed steel bars and anti-cracking steel bars of the folded plate 2 are unified and shared, the anti-cracking and stress effects are achieved, and meanwhile, the steel mesh 5 is folded into a ladder shape, and the rigidity and the non-deformation performance can be improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.
Claims (2)
1. A prefabricated beam type folded plate stair is characterized by comprising two side beams and a folded plate, wherein the two side beams are erected oppositely in parallel, the folded plate is fixedly connected between the two side beams and is in a ladder plate shape, and the upper surface and the lower surface of the folded plate are lifted step by step in a ladder shape;
the folded plate is of a reinforced concrete structure, and a steel mesh is arranged in the folded plate.
2. A prefabricated beam-folded stair as claimed in claim 1 wherein said web of rebar is bent into the same stair-step elevation as the flaps, the web of rebar extending over both the horizontal and vertical portions of the flaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120087806.4U CN216641203U (en) | 2021-01-13 | 2021-01-13 | Precast beam type folded plate stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120087806.4U CN216641203U (en) | 2021-01-13 | 2021-01-13 | Precast beam type folded plate stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216641203U true CN216641203U (en) | 2022-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120087806.4U Active CN216641203U (en) | 2021-01-13 | 2021-01-13 | Precast beam type folded plate stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216641203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357026A (en) * | 2023-04-07 | 2023-06-30 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
-
2021
- 2021-01-13 CN CN202120087806.4U patent/CN216641203U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357026A (en) * | 2023-04-07 | 2023-06-30 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
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